Elevator



'4 Sheets-Sheet 1.

(No Model.)

A. G. PAGE. ELEVATOR.

.No. 362.654. Patented May 10, 1887.

. /MV v 0/ H'Lifvpsssga:

4 Sheets-Sheer 2.

(No Modh) A. G. PAGE.

ELEVATOR.

Patented May 10, 1887.

V/% Witnesses:

Inventor.-

(No Modl'.)

A. PAGE,

ELEVATOR.

4 Sheets -Sheet 3Q Patented May 10, 1887.

- fnventar;

4 Sheets-Sheet 4.

(No Model.)

ELEVATOR.

Patented'May 10, 1887.

No. s62,654.

. the shaft from floor to floor. I5,

ble material.

PATENT FFICEQ ALBERT G. PAGE, OF SAN FRANCISCO, CALIFORNIA.

E LEVATO R'.

SPECIFICATION forming part of Letters Patent No. 362,654,6lated May 10, 1887.

Application filed July 9,1886. Serial No. 207,624. (1\*o model.)

To all whom it may concern.- 7

7 Be it known that I, ALBERT G. PAGE, a citizen of the United States of America, and a resident of the city and county of San Francisco, State of California, have invented new and useful Improvements in Elevator-Doors, of which the following description is a full, clear, and exact specification.

My invention relates to improvements in elevator-doors, in which I provide automatic opening and closing fire-poof doors for the elevator-shaftto prevent draft, andin case of fire to prevent the flames from passing through I have also constructed a gripping device to prevent the cage from falling to the bottom of the shaft or well in case. the hoisting-rope should break or become detached from the cage. The fire-proof doors may be made of metal or any other suita- I attain these objects by the devices and mechanism illustrated in the accompauyingdrawings, in which Figure 1 is a vertical section through the shaft, showing devices and mechanism for hinging and operating the fire-proof doors and the cage in the act of ascending. Fig. 2 is a View of the fireproof doors open, showing the cage in the act of descending. Fig. 3 is a section through the shaft, showing the front of the fire-proof doors. Fig. 4 is a section through the shaft, showing the rear of the fireproof doors. Fig. 5 is a view showing the rear elevation of the cage. Fig. 6 is a plan of the fireproof doors, looking from above. Fig. 7 is a plan of the fire-proof doors,looking from underneath. Fig. 8 is a side elevation of the shaft, showing the cage in the act of descend ing. Fig. 9 is a horizontal section of the cage.

A shows the shaft or elevator-well; B, the elevator-cage; GO, thefire-proof doors; D, rod or pipe on which the elevator-cage slides up and down, and on which the grip or clutch Z operates; E, wire rope, by means of which the cage B is hoisted or lowered.

The wire hoisting-rope is secured by suitable means to movable cross bar I, and is stopped by a solid cross-piece, O, which is secured firmlyto the sides of the cage. Between the solid cross-piece O and the movable cross bar Pare springs Q, which have a downward movement upon the cross-bar P. To the ends ing up or down in the shaft.

of this cross bar I? is pivoted a movable clutch-rod, R. Pivotal] y secured to it are cross pieces m. They are pivoted at its other end to clutch-rod R, which is firmly secured to the side of the cage. To the face of the rods or bars R It are securedthe grip-shoesZ,- which grip the runner or pipe D whenever the wire rope breaks or becomes disengaged from the cage.

The operation of the clutch is: WVhen the wire rope is released or disconnected fromthe cross-bar P, then the springs Q, which are secured to the solid cross-piece 0, press the crossbar P downward, thereby acting on the movable clutch-rod R in a downward direction. The short bars at come to an angle, thereby shortening the distance between the rods or bars R R, to which the clutch-shoes Z are secured. These shoes 1 then clutch firmly the pipe D and prevent the cage from falling to the bottom of the well. When the wire rope is lifting the cage or holding it in suspension, then the rod Bis drawn upward, releasing the clutch Z, thusallowing the cage to pass freely up or down the shaft, as required.

' The shaft-doors O G are hinged and operated in the following manner: To the top of the fireproof doors I secure and pivot rods or bars at point a. The other end of these bars I secure and pivot to the side of the shaft at point b, thereby hinging the doors from above. To the bottom of the doors I pivot and secure at points 0 the rods or bars H. The other end of these rods I secure pivotally to the sides of the shaft at points d. On the door 0, at point 0, I secure pivotallylever L, which near its middle works on the fulcrum-bolt h. In the slot 12, at the lower end of this lever L, I pivotally secure at point It the connecting -rod K, also frictionroller 7c. The other end of this connecting-rod K, I secure pivotally to door C at point 0, thereby connecting both fireproof doors in such a manner that they are worked simultaneously when the cage is pass- Furthermore, I secure pivotally to door 0, at point e, a connecting-rod, J, which Isecure pivotally to lever I at point 9. The lever L works on the fulcrum-bolt f, which is secured to the side of the shaft. On top of lever L, I secure pivotally friction-roller e. 7

IOO

For the purpose of opening and closing the doors in the ascent and descent of the cage, I have constructed and secured to the sides of the cage guide-blocks M N. \Vhen the cage is below the doors and is ascending, the guideblocks M will receive between them the frictionroller 7;, forcing the bottom of the lever L toward the right, thereby forcing the upper end of lever L toward the left, and, being pivotally secured to door 0, will press the door to the side of the shaft. Vhen the bottonroflever L is pressed to the right, it will then also press on the connecting-rod K and press upward and sidewise the door 0 until it rests against the side of the shaft, thereby making room for the cage to pass upward. \Vhen the cage is above the doors, then the guide-blocks N will, by means of the friction-roller 0, force the upper section of the lever I to the right, thereby forcing the lower section of lover I to the left, which, being connected, as described, will close doors 0 0' simultaneously.

When the cage is descending, the guide-block N works on friction-rollers c and connecting devices, as described, for opening the doors,

and guide-blocks M work on friction-roller 7c and connecting devices for opening and closing the doors in the manner and for the purpose described.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination of the cross-bar P, spring Q, movable rod It, stationary rod R, crosspieees or links m, and shoes or clutches Z, with the rod D, substantially as set forth.

2. The combination of the doors 0 C, the bars G, pivoted to the upper faces of the doors at one end and to the sides of the well at their other ends, the rods or bars H, pivotally connected to the under faces of the doors, the pivoted slotted lever L, the bolth, the rod K, having frietionrollers 1:, the levers I J, frictionrollcr c, and the car provided with guide blocks, as set forth.

ALBERT G. PAGE. 

